%------------------------------------------------------------------------------
% File : Drodi---4.1.1
% Problem : GEO146-1 : TPTP v9.3.1. Released v2.4.0.
% Transfm : none
% Format : tptp:raw
% Command : drodi -timeout(300) /export/starexec/sandbox/benchmark/theBenchmark.p
% Computer : n019.cluster.edu
% Model : x86_64 x86_64
% CPU : Intel(R) Xeon(R) CPU E5-2620 v4 2.10GHz
% Memory : 8046.5625MB
% OS : Linux 6.8.0-71-generic
% CPULimit : 300s
% WCLimit : 300s
% DateTime : Thu Sep 24 12:24:11 PM UTC 2026
% Result : Unsatisfiable 0.09s 0.41s
% Output : CNFRefutation 0.09s
% Verified :
% SZS Type : Refutation
% Derivation depth : 5
% Number of leaves : 5
% Syntax : Number of formulae : 15 ( 3 unt; 0 def)
% Number of atoms : 27 ( 0 equ)
% Maximal formula atoms : 2 ( 1 avg)
% Number of connectives : 25 ( 13 ~; 12 |; 0 &)
% ( 0 <=>; 0 =>; 0 <=; 0 <~>)
% Maximal formula depth : 6 ( 4 avg)
% Maximal term depth : 3 ( 1 avg)
% Number of predicates : 3 ( 2 usr; 1 prp; 0-3 aty)
% Number of functors : 5 ( 5 usr; 3 con; 0-2 aty)
% Number of variables : 22 ( 22 !; 0 ?)
% Comments :
%------------------------------------------------------------------------------
fof(f97,axiom,
! [A,B,C] :
( once(at_the_same_time(at(A,C),at(B,C)))
| ~ connect(A,B,C) ),
file('/export/starexec/sandbox/benchmark/theBenchmark.p') ).
fof(f98,axiom,
! [A,B,C] :
( connect(A,C,B)
| ~ once(at_the_same_time(at(A,B),at(C,B))) ),
file('/export/starexec/sandbox/benchmark/theBenchmark.p') ).
fof(f99,axiom,
! [A,B] :
( once(at_the_same_time(B,A))
| ~ once(at_the_same_time(A,B)) ),
file('/export/starexec/sandbox/benchmark/theBenchmark.p') ).
fof(f111,negated_conjecture,
( connect(sk28,sk27,sk29)
| connect(sk27,sk28,sk29) ),
file('/export/starexec/sandbox/benchmark/theBenchmark.p') ).
fof(f114,negated_conjecture,
( ~ connect(sk27,sk28,sk29)
| ~ connect(sk28,sk27,sk29) ),
file('/export/starexec/sandbox/benchmark/theBenchmark.p') ).
fof(f243,plain,
! [X0,X1,X2] :
( once(at_the_same_time(at(X0,X2),at(X1,X2)))
| ~ connect(X0,X1,X2) ),
inference(cnf_transformation,[status(thm)],[f97]) ).
fof(f244,plain,
! [X0,X1,X2] :
( connect(X0,X2,X1)
| ~ once(at_the_same_time(at(X0,X1),at(X2,X1))) ),
inference(cnf_transformation,[status(thm)],[f98]) ).
fof(f245,plain,
! [X0,X1] :
( once(at_the_same_time(X1,X0))
| ~ once(at_the_same_time(X0,X1)) ),
inference(cnf_transformation,[status(thm)],[f99]) ).
fof(f261,plain,
( connect(sk28,sk27,sk29)
| connect(sk27,sk28,sk29) ),
inference(cnf_transformation,[status(thm)],[f111]) ).
fof(f264,plain,
( ~ connect(sk27,sk28,sk29)
| ~ connect(sk28,sk27,sk29) ),
inference(cnf_transformation,[status(thm)],[f114]) ).
fof(f400,plain,
! [X0,X1,X2] :
( connect(X2,X0,X1)
| ~ once(at_the_same_time(at(X0,X1),at(X2,X1))) ),
inference(resolution,[status(thm)],[f245,f244]) ).
fof(f409,plain,
! [X0,X1,X2] :
( ~ connect(X1,X0,X2)
| connect(X0,X1,X2) ),
inference(resolution,[status(thm)],[f400,f243]) ).
fof(f412,plain,
~ connect(sk28,sk27,sk29),
inference(backward_subsumption_resolution,[status(thm)],[f264,f409]) ).
fof(f413,plain,
connect(sk28,sk27,sk29),
inference(backward_subsumption_resolution,[status(thm)],[f261,f409]) ).
fof(f415,plain,
$false,
inference(forward_subsumption_resolution,[status(thm)],[f413,f412]) ).
%------------------------------------------------------------------------------
%----ORIGINAL SYSTEM OUTPUT
% 0.00/0.03 % Problem : GEO146-1 : TPTP v9.3.1. Released v2.4.0.
% 0.00/0.04 % Command : drodi -timeout(300) /export/starexec/sandbox/benchmark/theBenchmark.p
% 0.09/0.36 % Computer : n019.cluster.edu
% 0.09/0.36 % Model : x86_64 x86_64
% 0.09/0.36 % CPU : Intel(R) Xeon(R) CPU E5-2620 v4 @ 2.10GHz
% 0.09/0.36 % Memory : 8046.5625MB
% 0.09/0.36 % OS : Linux 6.8.0-71-generic
% 0.09/0.37 % CPULimit : 300
% 0.09/0.37 % WCLimit : 300
% 0.09/0.37 % DateTime : Sun Sep 20 12:26:51 UTC 2026
% 0.09/0.37 % CPUTime :
% 0.09/0.38 % Drodi V4.1.1
% 0.09/0.41 % Refutation found
% 0.09/0.41 % SZS status Unsatisfiable for theBenchmark: Theory is unsatisfiable
% 0.09/0.41 % SZS output start CNFRefutation for theBenchmark
% See solution above
% 0.09/0.44 % Elapsed time: 0.062328 seconds
% 0.09/0.44 % CPU time: 0.182883 seconds
% 0.09/0.44 % Total memory used: 106.173 MB
% 0.09/0.44 % Net memory used: 105.998 MB
%------------------------------------------------------------------------------